Nail treatment method

ABSTRACT

A nail treatment method includes: a base step of forming a base layer (40) on a nail plate (3); a coloring step of forming a color layer (50) on the base layer (40); and a top step of forming a top coat layer (60) on the color layer (50). In the base step, the base layer (40) is formed so as to be spaced apart from the base of the nail plate (3), and furthermore is formed in a shape including a raised part that has a highest portion at a position that is closer to the base of the nail plate than a position one-half of the length of the nail plate (3) is.

TECHNICAL FIELD

The present invention relates to a nail treatment method, and inparticular to a nail treatment method using a gel nail agent.

BACKGROUND ART

As a method for beautify fingernails and toenails, gel nails using nailagents including photocurable resin are widely known, in addition tonail agents for manicure (also referred to as nail polish, lacquerenamel, and the like). Generally, the gel nail here means: a methodincluding the steps of applying a gel type nail agent onto the nail,curing the nail agent by light irradiation, and thus unifying the nailagent with the nail; the kinds of the above nail agents; and also acured nail agent itself. The gel nails thus treated are hard andscratch-resistant compared to lacquer enamel for manicure. Thus, glossand color development of the gel nails last for a long time (severalweeks), which also serves as a protector of the nails. Also, since suchbeautiful nails give a sense of contentment, the gel nails have becomevery popular.

As exemplarily shown in Patent Documents 1 and 2, in the conventionalgel nail treatment method, the surface and the tip of the nail aresuitably shaped/prepared, and then each gel nail agent is repeatedlyapplied and cured in the order of a base gel, a color gel and a top gel.In this treatment as shown in FIG. 13, first, the center of a nail 101in the width direction is brushed with the gel nail agent, and then theleft side and the right side are respectively brushed, by a brush 102,along the longitudinal direction of the nail 101, so that the gel nailagent is applied over the entire nail finely and evenly.

When removing the gel nail from the nail 101, a cotton wool, which isimpregnated with a remover, is placed on the gel nail, and the nail inthis state is covered with an aluminum foil for preventing the removerfrom evaporating, and is left as is for several minutes. After that,when the gel nail has softened, the gel nail is removed from the surfaceof the nail 101 by exfoliating it using a nail stick and the like orscraping it away using a cutting tool.

PRIOR ART DOCUMENTS Patent Documents

[Patent Document 1] JP 2013-244141 A

[Patent Document 2] JP 2015-189668 A

SUMMARY OF THE INVENTION Problem to Be Solved by the Invention

As described above, when treating gel nails, the brush 102 dipped in thenail agent is moved from the base to the tip of the nail 101 so as toapply the nail agent onto the entire nail 101. Accordingly, the nailagent is likely to accumulate on the base side of the nail 101. As shownin FIG. 14, thus finished gel nail 104 has a shape in which the base 103of the nail is raised when viewed from the side, which is likely to givean unnatural impression. Also, such a finished gel nail 104 makes adistinct step between the gel nail 104 and the nail 105 that has grownand is being exposed on the base side of the nail, when the nail growsas shown in FIG. 15. That does not look good, because the gel nail 104looks like standing out, and moreover the overall appearance isirregular.

The tip of the nail is often chipped or broken within two or three weeksafter the treatment. When the nail has been broken or has grown, the gelnail 104 is removed so that the nail is treated to have a new gel nail.As described above, the gel nail cannot be easily removed. It takes timeto remove the gel nail, and the nail 105 of a treated person is alsoshaved off together with the gel nail 104. Furthermore, it is necessaryto roughly sand the surface of the nail 105 so as to fix the new nailagent. As a result, if the gel nail treatment is repeatedly performed,the nails become thin, thereby it is difficult to prevent the nails fromchipping or breaking. In addition, the remover contains acetone in highconcentration. Since the remover is repeatedly used to remove the gelnail if it cannot be removed at a time, the nail and the skin around thenail are likely to be damaged.

The present invention was made in consideration of the above problems,an object of which is to provide a nail treatment method with which: thegood condition of the gel nails can be maintained for a long time;thinning or damage of the nails can be prevented even when the gel nailtreatment is repeatedly performed; and the beautifully finished gelnails have, at the same time, a strength.

Means for Solving the Problem

In order to achieve the above-described object, the means for solvingthe problem of the present invention is a nail treatment method using agel nail agent containing photocurable resin. The nail treatment methodincludes: a base step of forming a base layer on a nail plate byapplying a base gel onto the nail plate and curing the base gel by lightirradiation; a coloring step of forming a color layer on the base layerby applying a color gel or a mixed gel containing powder or small pieceson the base layer and curing the color gel or the mixed gel by lightirradiation; and a top step of forming a top coat layer on the colorlayer by applying a top gel onto the color layer and curing the top gelby light irradiation. The nail plate means a nail plate itself, a nailtip when using the nail tip, or a treatment object part formed by thenail plate and the nail tip unified with the nail plate. In the basestep, application and curing of the base gel are performed severaltimes, and at least in a first application, the base gel is applied soas to be spaced apart from a base of the nail plate. Thus, the baselayer is formed so as to be spaced apart from the base of the nailplate, and further it is formed in a shape including a raised part thathas a highest portion at a position that is closer to the base of thenail plate than a position one-half of a length of the nail plate is.

With the above configuration, the base layer including the raised partserves as the base coat, and the color layer, which constitutes a mainpart of the gel nail design, is formed on the nail plate as thetreatment object part. Since the base layer is spaced apart from thebase of the nail plate, the color layer and the top coat layer appliedon the base layer can be formed in a shape of a smoothly and naturallycurved surface extending to the base of the nail plate. Also, since thebase gel is applied several times, the formed base layer has a thicknessgreater than the conventional layer. In this way, the strength of thegel nail is improved, which reduces troubles such as breaking. Thus, agood condition of the gel nail can be maintained for a long time.

Also, in the above-described nail treatment method, when removing theformed gel nail, it is preferable that the top coat layer and the colorlayer that were previously formed are removed while maintaining thepreviously formed base layer on the nail plate, and that the base step,the coloring step and the top step are performed on the maintained baselayer and the nail plate so as to form a new base layer, a new colorlayer and a new top coat layer.

In this way, the time needed to remove the gel nail is reduced. Thus,even when the gel nail treatment is repeatedly performed, it is possibleto avoid thinning of the nail by being scraped away together with thepreviously formed gel nail or by being sanded, and accordingly, it ispossible to prevent the nail and the skin around the nail from beingdamaged.

Effects of the Invention

With the nail treatment method of the present invention, a beautifulappearance and a good condition of the gel nails can be maintained for along time, which gives greater satisfaction to a treated person. Also,such gel nails are finished to have a strength, while repeatedtreatments hardly damage the nails. As a result, it is possible tocontinuously enjoy the gel nails.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an explanatory view illustrating a step of a nail treatmentmethod according to an embodiment of the present invention.

FIG. 2 is an explanatory view illustrating a step following the stepillustrated in FIG. 1.

FIG. 3 is an explanatory view illustrating a step following the stepillustrated in FIG. 2.

FIGS. 4(a) to 4(c) are explanatory views sequentially illustrating abase step in the nail treatment method.

FIG. 5 is an explanatory view illustrating a step following the stepillustrated in FIG. 4(c).

FIGS. 6(a) to 6(c) are diagrams illustrating a base layer formed in thebase steps. FIG. 6(a) is a top view thereof, FIG. 6(b) is a side viewviewed from the side of a finger, and FIG. 6(c) is an explanatorycross-sectional view of FIG. 6(b).

FIG. 7 is an explanatory view illustrating a coloring step in the nailtreatment method.

FIGS. 8(a) and 8(b) are explanatory views sequentially illustrating atop step in the nail treatment method.

FIGS. 9 (a) to (c) are diagrams illustrating a finished gel nail by thenail treatment method. FIG. 9(a) is a side view viewed from the side ofa finger, FIG. 9(b) is a front view viewed from the tip of the finger,and FIG. 9(c) is an explanatory cross-sectional view of FIG. 9(a).

FIG. 10 is a side view illustrating a state in which the nail has grownfrom the state illustrated in FIG. 9(a).

FIG. 11 is an explanatory cross-sectional view illustrating a repairingstep in the nail treatment method.

FIG. 12 is an explanatory cross-sectional view illustrating the nailtreatment method according to another embodiment of the presentinvention.

FIG. 13 is an explanatory view illustrating a conventional nailtreatment method (conventional art).

FIG. 14 is a side view illustrating a finished gel nail by theconventional nail treatment method.

FIG. 15 is a side view illustrating a state in which the nail has grown(in the conventional art) from the state illustrated in FIG. 14.

MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the nail treatment method according to embodiments of thepresent invention will be described with reference to the drawings. Inthese embodiments, a description will be given on a case in which thenail treatment method according to the embodiments is applied to thefingernails or toenails. Note that each explanatory cross-sectional viewin FIGS. 6(c), 9(c), 11 and 12 schematically illustrates only a layeredstructure of the gel nail part applied onto a nail plate 3.

(Preparation Step)

For applying the gel nail to the nail, first, the nail and skin aroundthe nail are cared for. Also, the nail is filed and sanded to adjust itslength and shape (preparation step).

FIG. 1 to FIG. 3 are explanatory views illustrating the preparationstep. Sometimes the gel nail is applied onto a nail 1 itself of a personto be treated. However, when it is preferable, for example, that thenail 1 has more length, an ideal shape of the nail may be created usinga nail tip 2 made of plastic. In this case, an adhesive 21 is appliedonto an end part of the reverse surface of the nail tip 2 so that theend part is adhered to the tip of the nail (nail plate) 1.

At this time, as shown in FIG. 2, the nail tip 2 is adhered to the nail1 so that both side edges of the nail tip 2 in the width directionextend on the respective extended lines of side lines (i.e. left andright edges) of the nail 1. After the nail tip 2 is adhered, the tip endof the nail tip 2 is cut off so as to have a desirable length of thenail.

Next, as shown in FIG. 3, the length and the shape of the nail isadjusted using a special file (so called “file” or “emery board”). Bothside edges of the nail tip 2 in the width direction are adjusted so asto extend on the respective extended lines of the left and right sidelines of the nail 1. The surface of the nail is smoothed using a spongefile and the like.

Thus, the nail plate 3 is formed by unifying the nail 1 with the nailtip 2. The side lines of the nail plate 3 are formed so as to extend onthe respective extended lines of the side lines of the nail 1 of thetreated person.

In the description below, the nail 1 means a “nail plate” of thefingernails or toenails of the treated person, while the nail plate 3means a treatment object part, that is, the nail plate itself, the nailtip 2 when the treatment is performed using the nail tip 2, or both thenail plate and the nail tip 2 unified with the nail plate.

(Base Step)

Next, as shown in FIGS. 4(a) to 4(c), a base gel 4 is applied onto thenail plate 3. The base gel 4 is a gel nail agent containing photocurableresin, which is also called a “clear gel”. The base gel 4 is appliedonto the nail plate 3 and cured so that a base layer 40 is formed (basestep).

In the base step, application and curing of the base gel 4 are performedseveral times. As shown in FIG. 4(a), when the base gel 4 is applied fora first time, the base gel 4 is applied onto a region from a positionone-half of the length of the nail plate 3 to a tip (free edge) 32 ofthe nail.

Here, the length of the nail plate 3 means a length from the base 31 ofthe nail plate 3, i.e. the tip of the loose cuticle (cuticle line), tothe tip 32 of the nail (i.e. tip of the unified nail tip 2).

In such an application work, the tip of a gel brush is dipped in thebase gel 4, and the application is started at the center of the nailplate 3 in the width direction. Sequentially, the base gel 4 is appliedonto the left side and then the right side. After that, the base gel 4and the nail plate 3 are irradiated, using a special light irradiationdevice, with light at a specific wavelength so as to cure the base gel4.

In the second application of the base gel 4, as shown in FIG. 4(b), thebase gel 4 is re-applied onto the previously cured base gel 4. At thistime, the application range of the base gel 4 is extended toward thebase 31 of the nail compared to the first application range, however,the base gel 4 is applied so as to be still spaced apart from the base31 of the nail. Also, the base gel 4 on the brush is three-dimensionallyapplied on the previously applied base gel 4 so as to have a teardrop ora drop shape tapered toward the tip 32 of the nail in plan view. On theside of the base 31 of the nail plate 3, the nail plate 3 (nail 1) isexposed. In this state, the base gel 4 is irradiated with light so as tobe cured.

Next, as shown in FIG. 4(c), the application of the base gel 4 for thethird time and thereafter is performed so that the base gel 4 isoverlapped with the base gel 4 previously applied and cured, similarlyto the second application. At this time also, the application range ofthe base gel 4 is extended toward the base 31 of the nail compared tothe second application range, however, the base gel 4 is applied so asto be still spaced apart from the base 31 of the nail plate 3. Afterapplication of the base gel 4, the base gel 4 is irradiated with lightso as to be cured.

After that, as shown in FIG. 5, the base gel 4 may be applied onto thereverse part of the tip of the nail plate 3 using a gel brush 7, fromthe palm side, so as to be cured. In this way, both the front and therear faces of the end edge of the nail plate 3 are covered by the basegel 4.

By applying and curing the base gel 4 as described above, the base layer40 can be formed on the nail plate 3, as shown in FIG. 6(a). Although itdepends on the kind of used clear gel, usually the base layer 40 isformed on the nail plate 3 as a transparent or a semitransparent resinlayer. As shown in FIGS. 6(b) and 6(c), the base layer 40 is formed soas to be spaced apart from the base 31 of the nail plate 3 and alsoformed in a shape including a raised part that has a highest portion ata position that is closer to the base 31 of the nail than a positionone-half of the length of the nail plate 3 is.

The number of application of the base gel 4 in the base step is notlimited to three times. The application may be finished by two times orcontinued four times or more, provided that the base layer 40 having araised part as shown in FIG. 6(c) is formed. Also, the application inwhich the base gel 4 is formed so as to have a teardrop or a drop shapeis not limited to the second application. It may be performed for thethird time or thereafter.

(Coloring Step)

Next, a gel nail agent such as a color gel 5 is applied onto the baselayer 40 and is cured so as to form a color layer 50 (coloring step). Inthis step, the color layer 50, which has colors and constitutes the mainpart of the gel nail design, is formed. The color layer 50 is formed byat least two times of application and curing of the color gel 5.

In this application work, the tip of the gel brush is dipped in thecolor gel 5, and the application is started at the center of the nailplate 3 in the width direction. Sequentially, the color gel 5 is appliedonto the left side and the right side.

For example, coloring is performed by applying the color gel 5 onto thebase layer 40 so as to put a color on the base layer 40. Also, as shownin FIG. 7, the color gel 5 may be gradually applied so that the colordeepens toward the tip 32 of the nail plate 3. In addition to use of thesingle color gel 5, multiple kinds of color gels 5 may be used topaint/draw various patterns and designs, thereby creating nail arts.

The gel nail agent applied as the color layer 50 is not limited to thecolor gel 5. It may be a mixed gel made by mixing powder or small piecessuch as glitters with a clear gel. Alternatively, both the color gel 5and the mixed gel may be used. Also, the nail arts may be done by notonly using the color gel 5 and the like, but also adhering various naildecorations to the applied color gel 5 and the like.

After the gel nail agent has been applied, it is irradiated with lightso that the applied gel nail agent is cured on the base layer 40 and thenail plate 3. Note that the color layer 50 does not necessarily have acolor.

(Top Step)

Next, a top gel 6 is applied onto the color layer 50 and is cured so asto form a top coat layer 60 (top step). In this step, the applicationand curing of the top gel 6 is performed several times.

As shown in FIG. 8(a), the top gel 6 is applied so as to cover the colorlayer 50. A clear gel similar to the base gel 4 may be used as the topgel 6. When the top gel 6 is applied for the first time, it is appliedso as to be spaced apart from the base 31 of the nail plate 3 and alsoto cover the color layer 50 from its end portion on the side of the baseof the nail to its end portion on the side of the tip of the nail. Afterthat, the nail plate 3 is irradiated with light, thus the top gel 6 iscured.

The top gel 6 is applied and cured further two times or more, andfinally, the top coat layer 60 is formed by covering the nail plate 3 bythe top gel 6 from the base 31 to the tip 32 of the nail plate 3 asshown in FIG. 8(b). Also, in the second application or thereafter, thetop gel 6 is preferably applied so as to have a teardrop or a drop shapetapered toward the tip 32 of the nail in plan view.

In this way, as shown in FIG. 9(a), a raised part 60 a of the top coatlayer 60 is formed so as to be located at a position one-fourth toone-half of the length of the nail plate 3 from the base 31 of the nail.More preferably, the raised part 60 a of the top coat layer 60 is formedso as to be located at a position three-eighth of the length of the nailplate 3 from the base 31 of the nail. The region from the raised part 60a of the top coat layer 60 to the base 31 of the nail has a smoothlycurved surface. Also, as shown in FIG. 9(b), when the nail plate 3 isviewed from the tip 32 of the nail (tip of the finger), the raised part60 a is formed on the center of the nail plate 3 in the width direction.

Forming the top coat layer 60 as described above serves not only toprotect the color layer 50 but also to gloss the surface of the nail.Especially, forming the top coat layer 60 so as to have a shape as shownin FIGS. 8(a) and 8(b) gives an excellent luster while obtaining athree-dimensional as well as natural shape of the nail.

When various nail decorations are used to create the nail art, it ispossible to fix such nail decorations on the nail plate 3 by coveringthem by the top gel 6.

Note that, when the nail decorations are used, the highest portion ofthe top coat layer 60 is sometimes, actually, the nail decorationcovered by the top gel 6. The raised part 60 a described in thisembodiment does not contain such increase in height caused by using thenail decorations and the like.

(Finishing Step)

After the top coat layer 60 is formed, a file, an emery board or a nailcutting machine (simply called “machine”) is put on the tip 32 and thesides of the nail plate 3 so as to finish the shape. Also, the surfaceof the top coat layer 60 is wiped off with nail wipe cloth impregnatedwith a removing liquid, thus uncured resin is removed (finishing step).

As shown in FIG. 9(c), the gel nail is finished by laminating the baselayer 40, the color layer 50, and the top coat layer 60 on the nailplate 3 in this order. The base layer 40 including a raised part, whichis the base of the color layer 50 that is a main part of the naildesign, is formed so as to be spaced apart from the base 31 of the nailplate 3, and in a shape having the raised part at a position that isslightly closer to the base 31 of the nail than the position one-half ofthe length of the nail plate 3 is. For this reason, as shown in FIGS.9(a) and 9(c), the color layer 50 and the top coat layer 60 can beformed in a shape of a smoothly and naturally curved sueface from theraised part 60 a to the base 31 of the nail plate 3.

In this way, by forming the gel nail in the shape of a smoothly andnaturally curved surface from the raised part to the base 31 of the nailplate 3, the appearance of the nail can be relatively held in a naturalshape even when the nail 1 has grown a few weeks after the treatment, asshown in FIG. 10. Especially, the raised part 60 a of the top coat layer60 is formed substantially at a three-eighth position of the length ofthe nail plate 3 from the base 31 of the nail, which means that the gelnail is finished so as to have the most raised part at a position thatis slightly closer to the base 31 of the nail than the position one-halfof the length of the nail plate 3 is. For example, four weeks after thisstate, the raised part 60 a will have moved substantially to the centerof the nail plate 3 in the length direction, and the beautiful andnatural shape of the nail can be maintained even when the nail 1 hasgrown.

Normally, the nail 1 is supported by a belt-like tissue called “yellowline” so that the nail 1 is fixed onto the nail bed. The yellow linemakes contact with the side lines (left and right edges) of the nail 1at two points (so-called “stress points”) that are likely to besubjected to load. Thus, the problem such as breaking or chipping of thenail is frequently generated from these points.

In contrast, in the nail treatment method according to theabove-described embodiment, the nail plate 3 is adjusted so that bothside edges of the nail tip 2 in the width direction are extended on therespective extended lines of the left and right side lines of the nail1. Also, since the base gel 4 is applied several times, the formed baselayer 40 has a thickness greater than the conventional layer. In thisway, the strength of the nail 1 and the nail plate 3 is considerablyimproved. Furthermore, the top coat layer 60 is formed so as to have theraised part 60 a located at a position one-fourth to one-half of thelength of the nail plate 3 from the base 31 of the nail, and to have athickness greater than the conventional layer. With the aboveconfiguration, the gel nails can be prevented from breaking or chippingeven when the stress points are subjected to load due to housework orwork, accordingly, a good condition of the gel nails can be maintainedfor a long time.

(Repairing Step)

When a treated person wants to change the nail design or the nail 1 hasgrown as time passes, the gel nails can be removed so that new gel nailsare applied. When the new gel nail is applied, in this embodiment, apart of the previously formed base layer 40 (for example, the part lowerthan the dashed-double dotted line indicated in FIG. 11) is maintainedon the nail plate 3. Also, the previously formed color layer 50 and thetop coat layer 60 on the color layer 50, which are located upper thanthe dashed-double dotted line, are removed. Since the top coat layer 60is a clear gel similar to the base layer 40, the top coat layer 60 onthe side of the base 31 of the nail may also be maintained on the nailplate 3.

These layers are removed using an emery board or a nail cutting machine(simply called “machine”). When removing the color layer 50, part of thebase layer 40 may also be scraped away together with the color layer 50.

As described above, since the base layer 40 is formed so as to have athickness in the raised shape, the nail cutting machine does not makecontact with the nail 1. Thus, there is almost no risk of scraping thenail 1. Furthermore, since the remover or the like containing acetone inhigh concentration is not used, it is possible to prevent the nail 1 andthe skin around the nail from being damaged.

After the color layer 50 is removed, a thin coat of the base layer 40and the top coat layer 60, which were previously formed, remain on thenail plate 3. Onto this nail plate 3, the preparation step, the basestep, the coloring step and the top step are performed (repairing step).Thus, a new base layer, a new color layer and a new top coat layer canbe formed.

Since the new base layer 40 is formed on the remaining coat of theprevious base layer 40 of the nail plate 3, the gel nail formed in therepairing step has an increased strength compared to the previous formedgel nail.

With the method as described above, it is possible to form the gel nailhaving an increased strength on the nail plate 3 without placing anyburden (such as thinning) on the nail 1 of the treated person. Thus, itis possible to avoid disadvantages when the gel nail treatment isrepeatedly performed. Rather than that, it is possible to strengthen thenail 1 by repeatedly performing the nail treatment method according tothis embodiment, which results in a healthy and beautiful state of thenail being maintained. Furthermore, the gel nails applied as describedabove can maintain the beautiful gloss and color for a long time, whichserves to remarkably improve a sense of satisfaction of the treatedperson when she/he looks her/his beautiful nails.

In the above-described embodiment, the gradation nail design wasexemplarily described. However, the nail design coloring the entire nailplate 3 may also be adopted. In this case, as shown in FIG. 12, it ispreferable to thinly apply and cure a base gel 4 a on the end of thebase 31 of the base layer 40 at the beginning of the coloring step. Byforming the base gel 4 a like this, the resin layer similar to the baselayer 40 is extended in the vicinity of the base 31 of the nail plate 3,and the color layer 50 is formed on such formed base gel 4 a and thebase layer 40. With this treatment method also, the raised part 60 a ofthe top coat layer 60 can be formed so as to be located at a positionone-fourth to one-half of the length of the nail plate 3 from the base31 of the nail. Thus, the gel nail whose gloss is further improved canbe formed, which has still a beautiful and natural shape of nail.

The nail treatment method of the present invention in not limited toapply the above steps on the nail 1 itself of the treated person or thenail plate 3. The above steps may be applied to nail tips made ofplastic so as to form fake nails, and such fake nails can be adhered tothe nails 1. In the gel nail, there are two kinds of gel nail agentshaving respectively different hardness, i.e. a hard gel and a soft gel.In the method of the present invention, any gel nail agent can be used,provided that such a gel nail agent contains photocurable resin. Themethod of the present invention can be applied, of course, not only tothe fingernails 1, but also to the toenails.

The present invention may be embodied in other forms without departingfrom the gist or essential characteristics thereof. The foregoingembodiments are therefore to be considered in all respects asillustrative and not limiting. The scope of the invention is indicatedby the appended claims rather than by the foregoing description, and allmodifications and changes that come within the meaning and range ofequivalency of the claims are intended to be embraced therein.

This application claims priority based on Patent Application No.2016-004306 filed in Japan on Jan. 13, 2016. The entire contents thereofare hereby incorporated in this application by reference.

INDUSTRIAL APPLICABILITY

The present invention can be suitably used as a gel nail treatmentmethod for decorating nails.

DESCRIPTION OF REFERENCE NUMERALS

-   1 Nail-   2 Nail tip-   3 Nail plate-   31 Base of nail-   32 Tip of nail-   4 Base gel-   40 Base layer-   5 Color gel-   50 Color layer-   6 Top gel-   60 Top coat layer-   7 Gel brush

1. A nail treatment method using a gel nail agent containingphotocurable resin, comprising: a base step of forming a base layer on anail plate by applying a base gel onto the nail plate and curing thebase gel by light irradiation; a coloring step of forming a color layeron the base layer by applying a color gel or a mixed gel containingpowder or small pieces onto the base layer and curing the color gel orthe mixed gel by light irradiation; and a top step of forming a top coatlayer on the color layer by applying a top gel onto the color layer andcuring the top gel by light irradiation, wherein the nail plate is anail plate itself, a nail tip when using the nail tip, or a treatmentobject part formed by the nail plate and the nail tip unified with thenail plate, wherein, in the base step, application and curing of thebase gel are performed several times, and at least in a firstapplication, the base gel is applied so as to be spaced apart from abase of the nail plate, and wherein the base layer is formed so as to bespaced apart from the base of the nail plate and furthermore is formedin a shape including a raised part having a highest portion at aposition that is closer to the base of the nail plate than a positionone-half of a length of the nail plate is.
 2. The nail treatment methodaccording to claim 1, wherein, in the base step, the base gel is appliedonto a region from the position one-half of the length of the nail plateto a tip of the nail plate in the first application while the base gelis re-applied onto the previously cured base gel so as to be stillspaced apart from the base of the nail in a second application andthereafter, and wherein the base layer is formed so that a base side ofthe nail plate is exposed.
 3. The nail treatment method according toclaim 1, wherein, in the base step, the base gel is applied so as tohave a teardrop or a drop shape tapered toward a tip of the nail platein plan view in a second application or thereafter.
 4. The nailtreatment method according to claim 1, wherein, in the top step,application and curing of the top gel are performed several times, andthe top coat layer is formed so as to have a raised part whose highestportion is located at a position one-fourth to one-half of the length ofthe nail plate from the base of the nail plate.
 5. The nail treatmentmethod according to claim 1, wherein, in the top step, the top gel isapplied so as to have a teardrop or a drop shape tapered toward a tip ofthe nail plate in plan view.
 6. The nail treatment method according toclaim 1, wherein, when the nail plate is formed by a nail plate itselfof a person to be treated and a nail tip used and unified with the nailplate of the person to be treated, the nail plate is formed so that bothside edges of the nail tip in a width direction are extended onrespective extended lines of side lines of the nail plate itself of theperson to be treated.
 7. The nail treatment method according to claim 1,wherein the top coat layer and the color layer that were previouslyformed are removed while maintaining the base layer previously formed onthe nail plate, and wherein, on the maintained base layer and the nailplate, the base step, the coloring step and the top step are performedso as to form a new base layer, a new color layer and a new top coatlayer.
 8. The nail treatment method according to claim 2, wherein, inthe base step, the base gel is applied so as to have a teardrop or adrop shape tapered toward a tip of the nail plate in plan view in asecond application or thereafter.
 9. The nail treatment method accordingto claim 2, wherein, in the top step, application and curing of the topgel are performed several times, and the top coat layer is formed so asto have a raised part whose highest portion is located at a positionone-fourth to one-half of the length of the nail plate from the base ofthe nail plate.
 10. The nail treatment method according to claim 3,wherein, in the top step, application and curing of the top gel areperformed several times, and the top coat layer is formed so as to havea raised part whose highest portion is located at a position one-fourthto one-half of the length of the nail plate from the base of the nailplate.
 11. The nail treatment method according to claim 8, wherein, inthe top step, application and curing of the top gel are performedseveral times, and the top coat layer is formed so as to have a raisedpart whose highest portion is located at a position one-fourth toone-half of the length of the nail plate from the base of the nailplate.
 12. The nail treatment method according to claim 2, wherein, inthe top step, the top gel is applied so as to have a teardrop or a dropshape tapered toward a tip of the nail plate in plan view.
 13. The nailtreatment method according to claim 3, wherein, in the top step, the topgel is applied so as to have a teardrop or a drop shape tapered toward atip of the nail plate in plan view.
 14. The nail treatment methodaccording to claim 4, wherein, in the top step, the top gel is appliedso as to have a teardrop or a drop shape tapered toward a tip of thenail plate in plan view.
 15. The nail treatment method according toclaim 8, wherein, in the top step, the top gel is applied so as to havea teardrop or a drop shape tapered toward a tip of the nail plate inplan view.
 16. The nail treatment method according to claim 9, wherein,in the top step, the top gel is applied so as to have a teardrop or adrop shape tapered toward a tip of the nail plate in plan view.
 17. Thenail treatment method according to claim 10, wherein, in the top step,the top gel is applied so as to have a teardrop or a drop shape taperedtoward a tip of the nail plate in plan view.
 18. The nail treatmentmethod according to claim 11, wherein, in the top step, the top gel isapplied so as to have a teardrop or a drop shape tapered toward a tip ofthe nail plate in plan view.
 19. The nail treatment method according toclaim 2, wherein, when the nail plate is formed by a nail plate itselfof a person to be treated and a nail tip used and unified with the nailplate of the person to be treated, the nail plate is formed so that bothside edges of the nail tip in a width direction are extended onrespective extended lines of side lines of the nail plate itself of theperson to be treated.
 20. The nail treatment method according to claim3, wherein, when the nail plate is formed by a nail plate itself of aperson to be treated and a nail tip used and unified with the nail plateof the person to be treated, the nail plate is formed so that both sideedges of the nail tip in a width direction are extended on respectiveextended lines of side lines of the nail plate itself of the person tobe treated.